1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 */ 19 20 package org.apache.myfaces.orchestra.conversation.basic; 21 22 import org.apache.commons.logging.Log; 23 import org.apache.commons.logging.LogFactory; 24 import org.apache.myfaces.orchestra.conversation.ConversationMessager; 25 26 /** 27 * Handle user-specific notifications about conversation anomalies, when we are running 28 * in a plain servlet environment (no JSF etc). 29 * <p> 30 * Unfortunately there is no standard way of displaying a message to a user in such an 31 * environment (except possibly throwing an exception, forcing the standard error page 32 * to be shown). This implementation therefore just logs the message to the standard 33 * server application log. 34 * <p> 35 * If you do not like the default behaviour then implement your own version of this 36 * class and configure your alternative as the standard "Conversation Messager" 37 * instead. See the documentation on interface ConversationMessager for details. 38 * <p> 39 * As required by the ConversationMessager interface, all methods on this class are thread-safe. 40 */ 41 public class LogConversationMessager extends ConversationMessager 42 { 43 private final Log log = LogFactory.getLog(LogConversationMessager.class); 44 45 public void setConversationException(Throwable t) 46 { 47 log.info("Conversation exception occurred", t); 48 } 49 50 public void setConversationNotActive(String name) 51 { 52 log.info("Conversation not active: " + name); 53 } 54 }